if one thread set its current->flag with PF_NOFREEZE, then it means
this thread is unfreezable,does this mean, when the system entered
into a suspended state, even though all the other threads have already
gone sleep, this thread still keeps awaken?
One thing I am very confused is, if all the other threads goes to
sleep,can this only one thread(assume only one thread marked itself as
unfreezable.) still works well?
Regards
Jason
On Friday, 10 August 2007 07:19, jidong xiao wrote:
> if one thread set its current->flag with PF_NOFREEZE, then it means
> this thread is unfreezable,does this mean, when the system entered
> into a suspended state, even though all the other threads have already
> gone sleep, this thread still keeps awaken?
It will be able to run when all freezable threads are frozen.
> One thing I am very confused is, if all the other threads goes to
> sleep,can this only one thread(assume only one thread marked itself as
> unfreezable.) still works well?
The question is rather theoretical, because there are some unfreezable threads
in the system. In theory, such a thread can work well as long as it doesn't
need to wait for another thread that is frozen.
Greetings,
Rafael
--
"Premature optimization is the root of all evil." - Donald Knuth